Breakthrough in tribology: Making extremely thin lubricating films predictable

Extension of the Reynolds Equation by a Non-linear Wall Slip Law

13-Dec-2023 - Many tribological systems are operated at their load limits for reasons of efficiency. Lubrication gaps are becoming narrower and lubricating films must withstand greater loads. For the reliable design of such systems, development and construction depend on precise calculation methods. However, ...

Characterizing and designing lubricants on the computer

Computational models based on molecular structure properties

15-Apr-2020 - Lubricated shafts, bearings and gears only run 'like clockwork' when the components slide on a perfect lubricating film, generating as little friction, wear and energy loss as possible. To achieve this, engineers need to know the behavior of the lubricant film in the so-called tribo-contact, ...

Brilliant counterfeit protection

08-Jun-2010 - Counterfeit products create losses in the billions each year. Beside the economic damages, all too often additional risks arise from the poor materials and shoddy workmanship of »knock-off artists«. Yet with the aid of fluorescing dyes, materials can be individually tagged and identified with ...